package com.kabuda.hot100.链表.easy;

class ListNode {
    int val;
    ListNode next;


  
    public ListNode(int x) {
        val = x;
        next = null;
    }

    public ListNode() {
    }

    @Override
    public String toString() {
        return "ListNode{" +
                "val=" + val +
                ", next=" + next +
                '}';
    }
}